Dear Mr.cancengiz,

Having tail snub pulley , makes the return belt flat before entering to the tail pulley. It makes the V Scrapper to work effectively. Also it reduces the load on the first return roller from the tail pulley. But, I have removed many tail snub pulleys from the conveyors. I did not face any apparent problem.

Request others also to add their valuable opinions.

Regards, ■

Hi there Cancengiz..

The basic rule is ... use the absolute minimum number of pulleys on any conveyor.

You have to buy them, re-lag them, change them, curse them for reducing belt life and look after their bearings.

Snub pulleys are notorious for being inacessible, and many users remove them and simply don't put them back.

Consequently I never ever use snub pulleys at the tail (they also tend to run in the dirt), and very rarely use them at the head as well.

Cheers

LSL Tekpro ■

Applications mentioned so far really refer to bend pulleys. Snubs properly refers to situations where the wrap over a driving pulley has to be considered. I recall a very learned member of the forum pointing out that for a tail drive the snub drum should operate on the top strand where the tension is lower. As yet I have not had chance to apply the information, but there are some details which are never forgotten. ■

There is never a need for a tail snub pulley and there is not a need for 180 degrees of wrap. Sometimes, in the case of a large diameter tail pulley, a snub pulley is used to deflect the belt line back to the normal distance between carrying and return as dictated by the attachment to the channel stringers. This can just as easily be done by deflecting return idlers over an appropriate distance. Like Graham I believe that the least number of pulleys is best.

Joe Dos Santos ■